Tuft yarn frame for looms for weaving tufted pile fabric



E. F. CLARK 1,846;948

TUF'I' YARN FRAME FOR LOOMS FOR. WEAVING TUFTED FILE FABRIC Feb. 23, 1932.

Filed May 23, 1950 a v IEQVENIDR:

WW Tami A RNEY Patented Feb. 23, 1932 V 1 r EUGENE r. oLA'nmor DAMAnIscor'rA, MAINE, AssIGNoia r0. MARSHALL; FIELD Mints CORPORATION, or PHILADELPHIA, PENNSYLVANIA, A conronA'rIo orrENNsYL- V i a i 1 war Y RN ANE' FOR L s F R W A -WMED IL mad;- 1

Application filed- May This inventionrelates to improvements in tuft yarn framesfor use in looms for gweaving tufted p'lefabric such as Axminstercar- "petsand rugs,- n T 5 Y'lhese frames include in their construction a long body bar provided withmeans'on the respective ends thereof for connectingthem to and suspending them'from the links of endless parallel, carrying chains which carry a series offrames and pass around-sprocket wheels, and which are'actuated by the mech *anism of the 100mm carry the frames successively into and from a yarn deliveringposition.

The means for connectingtheframes to and suspending them fromthe ca-rrying chainscomprises at each endwofeach frame a tongue member rigidly connected to "the "body bar of the frame anda hook arm mov-V m able toward and from the tongue member and havingja bill portion on' itsfree end Which "extends toward -the tongue member "and which is adapted to engage a chain link to suspend 'the frame' therefrom, the tongue memberandfthe hook arm forming an -enclosure whichreceives the chain link to which l hey are connected: 9

' The bill portion of thehook-a-rm rests norinally in close relation to the-tongue memher and it is yieldable against spring pressure-away from the tongue member for the passage. of the chain link between-them to permit the application of the tuft yarn frame to and its removal from the link.

The bill portion of the hook arm is usually set at such angle to the body portion of the arm from which it projects that the'inner or chain engaging surface of the bill por tion extends at an acute angle to the body portion. e i

The foregoing well known means for con necting the tuft yarn frames to the carrying r chains therefor has'bee'n open to the objection that it sometimes works itself loose and accidentally detaches itself from the carrying chain to which it is connected when it is in service, resulting in much damage to itself and to the loom in which it is used. 7

As the tuft yarn frames traverse the circuit thereof to and from the yarn delivering {sprocket Wheels -inglthe;invention;"

1930, semina s-54350;

positionthey assume many'differentangular to'whioh they are connected; as t hekzhain s pass over, under and part wayaroundfthe which "they are connected,- the; lateral edges of the bill portion. of each hook arm, at the which' guide and' -support' VI them'and'as the-frames assume such angular v positions with relation ,to thechain links to positions with relation to the carrying chains I comes lnto cont'act withthe j'chain link to.

which t ne aiterthe "other, so

that the respecti after the-other, as theframe is 'rocked'toits sides off-'tliebill the adjacent tongue member untilfit'hnall'y frees itself entirely fromthe chain link, when theangular-positions of the'frame are favorable for such operation, and thereby per "m'its the e'n'd of. the tuft yarn frame support- -ed by it'to drop down, asitsconnecting means ve lateral edgesor sides of the bill portion will support the franie,fione? causes the hill thus accidentally detaches itself from the car- The purpose of-my 'present'inventionis'toovercome the objection herein setfofrthiand'l accomplish my purpose-bythe provision of a connecting-t ,h j a qhookv r c such novel construction thjatri-t willeifectually prevent the connecting means from becoming accidentally detached-from the carrying h imas willhereinafterappear;

,The; invention consists of the elements the combinationsofthernr hereinafter described and-claimed.

. JIn the accompanyingildrawings illustrat- Figure 1 is a front view, in section, b

of one end portion of atuft 'yarn f-rame pr'ovided =with meansnfor connecting it to acarryingchain illustratingone'fom of 'embodi- 'ment'of my invention, including acarrying chain'therefor;

Figure 2aaside eta-a the one and an end view-of the framet'c; J

' Figure: .3c.-is'- aside viewg, enlarged, of. the

hook arm of the means for connecting the frame to a carrying chain.

Figure 4 is a section through the bill portion of the hook arm, on line 44 of Fig. 3. Referring to the drawings, 2 designates the long bodyfb ar of thet'uft yarn frame, 3

one end'portion of a spool carried by the frame and 5 a row of transverselyextending plates formiai-g'rya rn passages-between them; for: receiving and tuft yarnjstrandsi:

drawn from the spool 3. V

The plates 5 which form the yarn strand passages are suitably connected toand pro'--- ject from a longitudinally extending angle bar 6 secured to the bottom of the bar 2." The yarn passages .for the strands drawn from the'spool 3 may be formed by any of the devices used for thispurpose whichtare well known-in thisart ,Thebody barQ. is provided withsuitable bearing arms for rotatably supportingvthe V respective ends of the; spool 3.; A beari-ng 2s ,provided with oppositely disposed, chain en- :gaging means for connecting them to the arm 7 shown Fig. 1, for supporting the end portiongof, the spool 3 shown therein The respective ends ofthe body bar .2 are carrying chains of the loom, each chain engaging means being of the following cone from its The upper ,s tie Secured rigidlytd the e idt f the body bar 2 is the lowerjend portion of a tongue member 1' S which extends upwardlyfrom the bar 2 and which isvprovided with an off-set portion forming an outwardly extending shoulder 9 and which is also provided-with a free end portion 10 extending upwardly from the the carrying chain.

chain 20, the hook arm 11 ispressed back against the action of the spring 15 until the bill portion 14 of-the arm clears the chain 7 link 18 and permits the link to pass out of the enclosure 17 as usual. J 7

' The lower or chain engaging surface 21 of the bill portion 14 of the hook arm 11 is made bulging or of convex form, trans versely thereof as shown in the drawings.

The hook arm: llghereiniillustrated, is formed of sheet metal andv the convex form .of the surface 21 is produced by indenting the upper or outer surface 22 the bill -portion 14: and thereby bulging the inner or lower surface "21 thereof The bulging or convex form of the chain engaging surface. 21: of the bill portion l l engaging the chain link 18 between .the lateraledges 23 of bill portion 14: and thereby: prevents anydirect alternate contact of the provides an intermediate bearing surface for edges 23- withthe chain link 18, as the tuft yarn frame assumes different angular positions with relation to the chain 20, and, con sequently, prevents the bill portion 14 from;

working, or walking,. b ack from its normal qposition against the action of :the spring;

and, therefore, preventsthetuft yarn frame from becoming accidentally detached from I claim as my-inventionz 1'. A tuft yarn frame provided with means for connecting itto a carrier chain, said means comprising 7 a chain engaging tongue and a hook arm formed of sheet metal andr having a bill portion. extending toward the tongue, said portion being concavo-convex n cross 7 section transverselythereof prov dinga' convex; chain engaging surface.

2. A hook arm fora tuft yarn. frame,?.a05 formed of sheet metal and comprising a body portion and a bill portionwhich is .concavoconvex m cross section .transverselyfthereof providing .a convex chain engaging surface.

In testimony whereof Iafiix my signature:

EUGENE F. CLARK.

The hook arm. 11 is movable on 'itspivot 12 back from the normal position illustrated in the drawings toward the bearing arm 7 and it is maintained yieldingly in the normal position Joya spring 15 which is interposed between a plate 16 .adjacent to the bearing arm 7 and the hook: arm ll and against which-the hook arminay be moved when it is moved back from itsnnormalpm SltiOH-L 1 H pprtions of thetongile member 11 andv the hook varm 8. formranienclosure 17 betweenlthein'for:thegreceptionof one of a V palirof parallel links 18.;and 19' of a carrying chain 20 to which the tuft yarnframe is connected by meansof the tongue member 8 and the hook arm 11, in the. -usual manner. 1When it is desired to disconnect the frame: from the 

